Service Battery Warnings are a way for your laptop to let you know that it has detected either a failure to charge as expected or that the internal battery has been consumed, or is unable to hold more than a specific percentage charge. You will see notifications that the battery needs to be serviced near the top-right corner of your display.
Trackpad Not Working is one of those symptoms that may at first seem like it couldn't be related to a battery issue. More than a few times we have had a situation where we have quoted a customer for a trackpad replacement over the phone and it ends up being a failing battery. The reason the two symptoms are related is the location of the battery itself. For example, on non-retina Macbook Pro models the battery is located directly underneath the trackpad. When a failing battery swells the path of least resistance is towards the trackpad which can prevent movement of the trackpad and in some extreme cases even crack it!
Short Battery Life is quite common with both failing and consumed batteries. Although consumers are able to access information on their battery health we strongly recommend consulting a third-party for an analysis of that information. Most service providers will be able to provide a quick explanation of current battery health at no cost and recommend replacement options.
Overheating can be caused when the electrical current flowing to individual cells in the battery encounters unplanned resistance. The excess energy that builds up is released as heat and can cause significant damage to your laptop. If you notice that your device is overheating we recommend consulting a technician to ensure that there is no risk of fire.
Unexpected Shutdowns can occur when a battery is unable to provide the necessary amount of electricity to your computer. If you are plugged directly into an outlet periodic loss of battery power is less significant, but without that fallback anything that is unsaved will likely be lost when the device loses power and reboots.